Home / 9,409.45-12,984.75-5,160.29

Finding the Fourth Proportional to 9,409.45, 12,984.75 and 5,160.29

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Solution

The fourth proportional to 9,409.45, 12,984.75 and 5,160.29 is: 7,121.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,409.45 : 12,984.75 = 5,160.29 : x
  2. Step 2: Convert to fraction form
    9,409.45/12,984.75 = 5,160.29/x
  3. Step 3: Cross multiply
    9,409.45x = 12,984.75 × 5,160.29
  4. Step 4: Simplify right side
    9,409.45x = 67,005,075.58
  5. Step 5: Solve for x
    x = 67,005,075.58/9,409.45
  6. Step 6: Final answer
    x = 7,121.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.